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Old 10-08-2015, 06:27 PM   #76 (permalink)
Karmann Eclectric
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Originally Posted by WindyDrew View Post
I don't need to substantially improve the efficiency, just enough to eliminate my gas consumption in my daily drive.
While finding a different route that is more advantageous to slow-rolling, fewer stops, or more coasting than the usual can help, the following is just for fun...

Hey Drew- any chance one leg is significantly downhill? I have a 550 foot loss of elevation during the last few miles of my morning commute, so can recover a fair bit at that point. (Will hit a terminal velocity of over 80 mph in Neutral on that hill!) I'm ready to play with a water bladder that adds mass for more intertia on the way down, and then gets drained before the climb back home! Gotta install the drain valve in front of the right rear tire so I can stop and take a leak on some victim.

Seriously though, that 550 feet of elevation is worth 745 joules or 0.20694 Watt-hrs per pound. Put on 200 pounds (24 gallons) of water, and there's a potential energy of 41.38 Watt-hours, or about enough to push my car for 1/4 of a mile farther than otherwise. Not worth the effort, but oughtta be measurable... Of course, more regen is not as good as more coasting, if you can.
2012 Mitsubishi i-MiEV, 112 MPGe
2000 Honda Odyssey
1987 F250 Diesel, 6.9L IDI, goes on anything greasy
1983 Grumman Kurbwatt, 170 kW "Gone Postal" twin
1983 Mazda RX-7 electric, 48 kW car show cruiser
1971 VW Karmann Ghia electric, 300 kW tire-smoker
1965 VW Karmann Ghia cabriolet, 1600cc
Have driven over 100,000 all-electric miles!
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